TPS2148

Features:

` Complete Power Management Solution for USB Bus-Powered Peripherals
` 3.3-V 200 mA Low-Dropout Voltage Regulator With Enable
` 3.3-V 340-m (Typ) High-Side MOSFET
` 5-V 340-m (Typ) High-Side MOSFET
` Independent Thermal- and Short-Circuit Protection for LDO and Each Switch
` 2.9-V to 5.5-V Operating Range
` CMOS- and TTL-Compatible Enable Inputs
` 75-A (Typ) Supply Current
` Available in 8-Pin MSOP (PowerPAD)
􀀀40°C to 85°C Ambient Temperature Range


Application

USB Peripherals
Digital Cameras
Zip Drives
Speakers and Headsets


Pinout




Specifications

Input voltage range: V_I(VIN/SWIN1), V_I(ENx) , V _{I(LDO_EN)}. . . . . . . . . . . . 0.3 V to 6 V
Output voltage range: V_o(OUTx) , V_{O(LDO_OUT)}, V_O(OCx) .. . . . . . . . . . . 0.3 V to 6 V
Continuous output current, I_O(OUT) , I_{O(LDO_OUT)} . . . . . . . . . . . . . . Internally limited
Continuous total power dissipation . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating virtual-junction temperature range, T_J .. . . . . . . . . . . . . 40°C to 110°C
Storage temperature range, T_stg .  . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds .. . 260°C
Electrostatic discharge (ESD) protection: Human body model . . . . . . . . . . . . . . . 2 kV
Charged device model (CDM) . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . .. . . . . . .. . 1 kV
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.


Description

The TPS2148 incorporates two power distribution switches and an LDO in one small package, providing a USB peripheral power management solution that saves up to 60% in board space over typical implementations.

The TPS2148 meets USB 2.0 bus-powered peripheral requirements. An integrated LDO regulates the 5-V bus power down to 3.3 V for the USB controller, and a MOSFET switch that is internally connected to the output of the LDO simplifies meeting the suspend and enumeration current requirements imposed by the USB specification.